updated synthax for pvlib 0.4. (#275)
updated synthax for pvlib 0.4. (#275)


mikofski/pvlib-python,anomam/pvlib-python,alorenzo175/pvlib-python,uvchik/pvlib-python,rubennj/pvlib-python,cwhanse/pvlib-python,wholmgren/pvlib-python,pvlib/pvlib-python